Electric radiator



c. F. SMITH AND 6. E. CURTISS. EEEEEEEEEEEEEEE R.

APPLICATION HLE D M A R 8 1 9 2 O.

Patented July 18, 1922.

UNITED STATES PATENT OFFICE.-

ASSIG-NORS TO LANDERS, FRARY & CLARK, OF NEW BRITAIN. CONNECTI OUT, A CORPORATION OF CONNECTIC Application filed March 8, 1920.

To allzcho mit may concern Be it known that we, (HARLns F. SMITH and Gnonon E. Crnriss, citizens of the llnited States, and residents of New Britain, county of Hartford, State of Connecticut, have invented certain new and useful Improvements in an Electric Radiator, of which the following is a specification.

This invention relates to electric heaters of the type having a dish shaped reflecting surface and a luminous heati g unit arranged therein, its object being to provide an arrangement and construction wherein the reflecting surface, when viewed from the front thereof, presents a plurality of bright panels between which are dark spaces, thus giving a pattern of pleasing effect.

11 the accompanying drawing:

Fig. 1 is a front view of a heater in which one embodiment of the present invention is incorporated, and

ig. 2 is a side view in central vertical section.

In the drawings, a is a reflector carried by a standard 6 rising from a base ,0, and 0? denotes a luminous heating unit arranged axially of the reflecting surface. The manner in which the reflector is mounted or supported forms no. part of the present invention, the base and standard shown in the drawings being by way of illustration only.

The reflecting surface of the reflector is generally of dis}; shape, this term being employed to descri e a reflecting surface which is generally circular in cross section on an plane transverse to the axis of he reflector and that the reflecting surfayzncreases in transverse diameter toward its forward edge.-:. In the present instance, the back portion of the reflecting sn f-ace is shown as being curved and the forward portion is shown more or less (3 ical, but it is to be understood that tl liefiffaracter of the convexity of tiis sur instance, it may 6 conical.

In accordance with the present invention, the refiectirg surface is broken or divided up into a urality of panels 10 by intervening members 11 warped out of the plane of the panels and having their side walls 12 at an angle to the surfaces of the panels. In. the present instance, the members 11' are shown as constituting radially extending ace may be varied, for e parabolic, spherical or Specification of Letters Patent.

such axis.

Patented July 18, 1922. Serial No. 364,079.

ribs V-shaped in cross section. are uniformly spaced apart so that the panels 10 are similar in extent, shape and all other respects. The panels may be referred to as being in the plane of the reflecting su face. and while this term may not be theoretically correct it is used for purposes of description to indicate that the surfaces of these panels form portions of a surface uniformly curved about a common axis.

The specific construction and shape of the heating unit may be varied. in the present instance it being shown as having a conical support arranged axially of the reflecting surface and a resistance coil wound spirally upon the support, the resistance coil being of such material that when heated it will glow or be luminous. It is preferable that this heating element be circular in cross section throughout its length and that its length be such that when the heater is viewed from a position directly in front thereof all por- These ribs tions of the panels will reflect light to such position.

It will be seen that with the construction and arrangement described any given point in the panels will reflect at least some of the light incident to that pointforwardly in a plane which includes that point and the axis of the reflector. Fin'thermore. owing to the length of the luminous heating unit. at least some of the rays incident to all points of the panels will. on reflection. converge to a position forwardly of the reflector and in the axis thereof. it will be understood that the light rays falling onv the angularly disposed surfaces 12 of the ribs will not be reflected in a plane including the axis of the reflector nor will any of these rays intersect This means that when viewed from a position in front of the heater the panels will appear bright. and as no light reaches the eye of the observer from the sides of the ribs. these ribs will appear dark or black. By thus warping certain portions of the reflecting surface out of the general plane of "the reflecting surface and associating therewith a properly arranged luminous heating unit. attractive patterns may be {no (lured upon the reflecting surface which add greatly to the beauty of radiators when they are in operation.

it is. of course. obvious that the invention is susceptible of various modifications and changes which are within the spirit of the invention without departing from the scope of the following claims, it loein g understood that the present disclosure of the invention is by way of illustration only and it is not to be taken as restrictive of our conception.

lVe claim as our invention 1. A reflector having a dish shaped refleeting surface provided with a plurality of longitudinally and transversely curved panels and angularly disposed walls connecting the panels.

' 2. A reflector having a dish shaped reflecting surface provided with a plurality of longitudinally and transversely curved panels and oppositely inclined walls angularly disposed to and connecting said panels.

3. A reflector having a dish shaped reflecting surface provided with a plurality of longitudinally and transversely curved panels, and radially extending angularly disposed walls connecting the panels.

4. A reflector having; a dish shaped reflecting: surface provided with a plurality of longitudinally and transversely curved panels of substantial area and all similarly arranged-about the axis of the reflecting surface and angularly disposed Walls of relatively small area connecting the panels.

1A reflector having a dish shaped refleeting surface provided with a plurality of longitudinally and transversely curved panels of substantial area and radially extending angularly disposed walls of relatively small area connecting the panels.

6. A dished reflector and a luminous electrical unit arranged axially thereof to project light rays forwardly and means on said reflecting surface inoperative to reflect light rays forwardly and dividing saidreflecting surface into curved panels.

CHARLES F. SMITH. GEORGE E. CURTISS. 

